Why still no dive acceleration difference?

[FC99]

Originally Posted by BlackBerry

When P51 dives to 4500 m=15000ft altitude, and reaches 640km/h=400 mph IAS,

Why 400mph IAS ? Why not any other number?

Unfotunatly, sonic speed at 4500m altitude is 322m/s, that is to say, the tip of airscew is 1 mach. There is no mach number "concept" in il2's model at all, how can I believe that il2 simulates 1 Mach aerodynamics very well?

Prop planes can't break sonic barrier so it's not that important for Il2 to have highly detailed Mach model.

Tempest could dive to 450 mph IAS below 20000ft, aha, tempest's big rotol 14-ft airscrew, 3800rpm, 450mph IAS, the tip of rotol must be supersonic, so is P51's hamilton, thus the efficiency curves of their airscrews play an important role when they dive to high speed.

Yes it does.

Why tempest outdives p51? For more efficiency airscew @ supersonic? Maybe. For much more heavier fuselage? Probably.

It does? Maybe, depends which models you take for comparison .

All in all, il2's model is lack of supersonic simulation, that's why we couldn't experience what tempest/p51 should be. That's why tempest couldn't outdive dora easily in game.

It should out dive Dora easily, why ?